文摘
Background This retrospective study was undertaken to analyze data from patients receiving iodine-125 ([125I]) seed brachytherapy postoperatively for the treatment of acinic cell carcinoma (ACC) of the parotid gland along with the following risk factors: residual tumor, recurrent tumor, facial nerve invasion, positive resection margins, advanced tumor stage, or tumor spillage. Patients and methods Twenty-nine patients with ACC (17 females, 12 males; age range, 13-3 years; median age, 37.3 years) were included. Median follow-up was 58.2 months (range, 14-22 months). Patients received [125I] seed brachytherapy (median actuarial D90, 177?Gy) 3-1 days (median, 14 days) following surgery. Radioactivity was 18.5-3.3?MBq per seed, and the prescription dose was 80-20?Gy. Results The 3-, 5-, and 10-year rates of local control were 93.1, 88.7, and 88.7-, respectively; overall survival was 96.6, 92, and 92-; disease-free survival was 93.1, 88.4, and 88.4-; and freedom from distant metastasis was 96.6, 91.2, and 91.2-. Lymph node metastases were absent in all patients, although two patients died with distant metastases. Facial nerve recovery was quick, and no severe radiotherapy-related complications were noted. Recurrence history, local recurrence, and distant metastasis significantly affected overall survival. Conclusion Postoperative [125I] seed brachytherapy is effective in treating ACC and has minor complications. Patients with a history of recurrence showed poor prognosis and were more likely to experience disease recurrence and develop metastases.